Slub catcher and tension for doubling machines



April 17, 1928.

F. E. HARDING SLUB CATCHER AND TENSION FOR DOUBLING MACHINES Filed June 4, 1925 Patented Apr. 17, 1928.

UNI-1T E DQSTAT E MEM i OFF FRANK-1E. :HARDING, 20F LAWRENCE, -MASSAGHUSETTS-T*ASSIGNOIL 'TO ARLINGTON 2 MILLS, OF LAWRENCE, MASSACHUSETTS; A CORPORATION OFJMASSACHUSETTS SLUB CATCHER AND TENSION ron DoUBLme mAcHm'EsI Application filed June 4,

The present invention relates to an int-- provement in doubling machines.

Theobject of theinvention is to produce a tensionand'slub catcher for use on doublers b which will prevent'the passing-of slubs to the'cheese and thereby reduce the amount of mending required in the woven clothf In doubling machines yarns from two ormore bobbins supported in an inclined position in the'unachine are drawn-upwardly through, a tension device, then around a drop wire, whence they'pass'to aguide roll, from which the twoiyarns pass to the winding meoha nisinwherethe double yarn is wound on the cheese. Ordinarily" (loublers draw yarnsfrom two"bobbins,'and when one of the yarns breaks or becomes exhausted-the drop Wirestops theiwind and the operative is required to piece 'the end'. Sodar'as I am aware, no construction 'of'slub'catcher has been-found adapted-to commercial use on doublers for woolertyarn. Consequently occasionally a slulic'aught on-a' yarn runs along and-is car--- ried through the'doubling process andwound up: on'the-cheese. -When this yarn is woven,

if the weaver does not happen' to catch the slab and remove it, the slub is woven into" the-clothand such clotlris required t'o be mendedy'thatis to say, the tedious opera :0 tion' of removing the slul) from the woven cloth" is required" to be perf0rmed, -and"the mendingof-cloth in a large mill is a very large and serious expense:

Thepresentinvention consists in the 'tension and doubler hereinafter described-andparticularlydefined in theclaim; it also consists in the slub catcher itself and, as such, is adapted -for'use in various machinerya In the accompanying draw-ingillustrating- .thepreferred 'forin o-fthe*inventiomFig. l is a transverse sectional elevation of a por tion-of a-doublihg'machine; Fig. 2 is a plan view-10f the lparts'illustratedin Fig. 1; Fig.3 is a rear elevation of thetension and slub ,catcher'; and-Fig. 4 is a front-elevation of the'*same.=

Th illus'trated embodiment of the invention --is describedas follows: The yarn 1 from the "bobbin I moves "upwardly to the guidegroove 2, thence across the upper surface of the plate 3, under the tension 4, through the "slub catcher indicatedin a gen eral way'by the'reference" character 5, and thence underi thedrop wire 6, from which it passes upwardly to .the'guide'roll which re 1925'. Serial No."34,846.1

'ceives' this am and anotheryarn from ananism-w'lhe guide-grooveis formedeon the- 7 i'ro'nt'ofthe plate-'3, the uppersurface T of i which forms one -'mernber-of the tensionde-i vice-. One side of the guide groove is formedby t-he:horn8 which projects forwardly and" upwardly -fro'm'-the plate-'3: The'other side lw of'the guide groove is formed by the' horn 9 which projects diagonally outward and then laterallyg -as shownin -Fig."2. *These-horns 8 and 9 provide large-'guiding surfaces -by-- WlllClI the operative may 'introduce the yarneasily and conveniently intdth guide groove without necessitating precise presentation' of the yarn thereto; The tensionplate- 3 is pro videdon its undei si'de with anearlO having 5 a longitudinal liole therethrougli;to receive -76 thetensionsupporting rod 11 to wh-ichit is secured-by'means of the-set screw 12." A. 1 stud 1 3 is supported "in the plat'e, being re-= ceived-in a boss 14 witlra drive fit and pro-'-- jectingupwardlyfloin the plate 3;" The-80 lower --end-of't'he stud-18 -is of reduced -di-= ameter. Nektabove-th' -platethe stud is I slightly enlarged in diameter, as at '1-5 (see-' Fig-*1): The tension 4, which'consists of a small dish-shaped disk' having a central= hole e5 largerin diameter than the enlarged portion-15 o'fthe stud, restsonthe late '3-01' onthefyar-n; which latter restson -e plate, -and-'- the weight; ot-the tension is such as to cause the proper-"drag to 1 be exerted" upon' the on thread as it passes under 'the tension. ---The central-"-holein the tensionbeing-somewhat e larger than the enlargedportion *15 of the studg't-he tensioniis perm-itted'to turnfreely' on the stud with :the yarn as it passes under 1 it and to *adapt itselfto the inequalities -ofthe yarn 'and'yet r'otate'f =freel-y 'on the stud: Above this enlarged "portion" 1 5 of the l stud the stud-is a gaiir reduced in diameter andreceives the hub" 17 of -the threading guide 1 18. -Th hub 17 is secured in place bymeans of tl1e setscrew- 19.- The threading guide 7 consists of l a shield-like device which (see Fig.- {1) *extendsoutwardly from the I huband thendow-nwardly toward the surface: of 1 the plate 3; The function of this threading guide'is to compel themperator to depress the thread-against-thelupper surface 7 of the thread to pass under the tension. In the absence of the threading guide the device would operate as well as in its presence so long as it was operating, but the large side surface 20 of the thread guide affords a larger area against which the thread may be laid in the process of threading up the device than is provided by the upturned lip of the tension. 7 Consequently the threading of the device is greatly facilitated. The slub catcher consists of two parts. The lower part 21 is extended laterally from the car 10 to the right see Fig. 4:) and is provided at its upper edge with a straight surface 22 which forms the lower face of the slub catching groove. The right-hand end 28 of the lower member 21 of the slub catcher is thickened (see Fig. 2) to provide for attachment of the upper slub catching member 24; thereto. The upper slub catching member 24 has a similarly thickened end 25, which corresponds in shape to the thickened end 23 of the lower slub catching member, and a screw 26 screwed into the end 23 of the lower slub catching member afiords means for holding the upper member 2 in place on the lower slub catching member 21. Both members are recessed, as shown at 27, to receive the spring 28 which acts to hold the upper slub catching member 2a in as high a position as is per mitted by the screw. Two dowel pins 29 and 30 secured in the upper slub catching member 24 are received in dowel holes 31 and 32 in the lower slub catching member and serve to hold the upper slub catching member 2a in correct position in relation to the lower member. The screw is provided with a hex-hole 33 adapted to receive a hex-wrench for use in turning the screw up and down to adjust the positions of the two slub catching members with relation to each other. The upper slub catching member 24 is provided on its lower edge with a slub catching surface 34, between which surface and the surface 22 of the lower slub catching member 21 the yarn passes away from the tension and slub catcher to the drop wire. At the inner end of the slot formed between the surfaces 34: and 22 there is provided a slub clearer groove 35 through which slubs may be removed when caught by the catcher. The operative is provided with a thin piece of metal which may be used to push the slub inwardly through the slab catching groove into the slub clearer groove 35. By adjusting the screw 26 the width of the slub catching groove may be regulated to the number of the yarn passing through the device. The upturned end 36 ot the upper member 24 of the slub catcher provides a convenient surface along which the yarn being threaded through the device may slide into the slub catching groove.

7 The operative in threading up the tension and slub catcher presents the thread between the horns 8 and 9 so that it enters the guide groove. The hand is then moved to the left so that the thread will engage the outer face of the threading guide for the tension; then the hand moves rearwardly so that the thread strikes the inclined end of the upper member of the slub catcher. This inclined end causes the thread as soon as it begins to move to slide down the outer surface of the thread guide for the tension. The operative then passes the thread around the eye 37 of the drop wire and stops the winding mechanism.

It is to be observed that the threading guide is supported with its lower edge in fixed and unadjusted position with respect to the upper surface 7 of the tension plate 3. This distance is determined by the shoulder at the lower end of the reduced top portion of the stud 15 so that the device is easily assembled and held in fixed position irrespective of changes in yarn numbers being doubled. When the yarn draws a slub through the device it passes under the tension and thence to the slub catcher which arrests it. broken, which in turn permits the drop wire to fall and stops the viiin'ding mechanism. The operative, as soon as is convenient, removes the slubfrom the slub catcher groove and pieces the yarn. This is done by running forward on the single running to the cheese, unwinding it from the cheese until the double portlon is reached, taking the broken down end therefrom and tying it to the end which was broken at the slub catcher, after which the pieced end is threaded, as has been described. The threading guide for thetension, it is to be observed, affords aconvenient means for guiding the thread under the tension, but it also contributes to the threading up of the slub catcher, and so it may be used if desired without the tension in cases where the tension is not necessary.

While the invention is particularly intended and adapted for use on doublers, it is to be understood that it may be employed in winding machines.

Having thus described theinvention, what is claimed is:

A tension and slub catcher for doubling machines comprising a tension plate provided with an integral perforated ear to receive a supporting rod and with a vertical stud hole, a stud having a reduced diameter lower end supported in the stud hole in the plate with its shoulder engaging the upper surface of the plate and also having an upper end, of reduced diameter, a dish-shaped tension disk having a hole in its center somewhat larger than that of the unreduced portion of the stud and supported thereon, a threading guide having a hub supported on and fitting the reduced upper end of thestud and having a shield portion extending out- This causes the thread to be.

wardly from the hub beyond the periphery of the tension disk and then downwar ly toward the surface of the tension plate, the space between the lower edge of the shield and the plate being fixed by the shoulder on the stud, the tension plate being provided with two forwardly extended horns, one extending forwardly and upwardly from the plate and the other extending forwardly and at a sharp angle to the first horn to form a thread guiding groove and then outwardly and laterally at an obtuse angle to its first direction, thus forming an angular horn, its two portions forming with the first horn a narrow groove and a wide'mouth leading to the groove, and a slub catcher consisting of two jaws of which the lower is formed integrally with the ear of the tension plate and the upper consists of a separate member carrying two dowel pins projecting into two holes in the lower jaw to maintain it in correct position with relation thereto, the jaws being provided with opposed spring recesses, a spring in the recesses normally tending to hold the jaws apart, and a screw to adjust the position of the upper jaw with relation to the lower one.

In testimony whereof I have signe name to this specification.

, FRANK E. HARDING. 

